[Maxima-lang-fr] find_root

[<cyr...@uk...>]

Bonjour,

Voici une autre question. Soit le programme suivant :

kill(all)$
load(romberg)$
f(x):= float(x+x^2)$
B(x):=x+1$
N(x):=romberg(f(u),u,-10,B(x))$
wxplot2d( '[N(x)], [x, 0.3,0.4] )$
find_root(N-285,x,0.3,0.4);

En reponse, Maxima me donne le graphe de la fonction comme je lui ai
demande et m'ecrit aussi


(%o6) find_root(N-285,x,0.3,0.4)(See attached file: Maxima_graph.png)

J'ai demande a Maxima la solution de l'equation N(x)=285 mais je n'arrive
pas a lui faire sortir la solution approchee. Comment faire pour avoir un
nombre en retour et pas
(%o6) find_root(N-285,x,0.3,0.4) ?

Cordialement,

Cyril


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